使用C#添加和删除动态控件Windows窗体 [英] Adding and removing dynamic controls Windows Forms using C#

问题描述

我的Windows窗体表单中有三个选项卡.根据TabPages[0]中选择的RadioButton，我在相关的TabPage上添加了一些动态控件.在Button_Click事件上，添加了控件，但是问题是我无法从其他(不相关)TabPage中删除动态添加的控件.

I have three Tabs in my Windows Forms form. Depending on the selected RadioButton in the TabPages[0], I added few dynamic controls on the relevant TabPage. On the Button_Click event the controls are added, but the problem is I'm not able to remove the dynamically added controls from the other (irrelevant) TabPage.

这是我的代码:

Label label235 = new Label();
TextBox tbMax = new TextBox();
label235.Name = "label235";
tbMax.Name = "txtBoxNoiseMax";
label235.Text = "Noise";
tbMax.ReadOnly = true;
label235.ForeColor = System.Drawing.Color.Blue;
tbMax.BackColor = System.Drawing.Color.White;
label235.Size = new Size(74, 13);
tbMax.Size = new Size(85, 20);

if (radioButton1.Checked)
{
    label235.Location = new Point(8, 476);
    tbMax.Location = new Point(138, 473);

    tabControl.TabPages[1].Controls.Add(label235);
    tabControl.TabPages[1].Controls.Add(tbMax);

    tabControl.TabPages[2].Controls.RemoveByKey("label235");
    tabControl.TabPages[2].Controls.RemoveByKey("tbMax");
}
else
{
    label235.Location = new Point(8, 538);
    tbMax.Location = new Point(138, 535);

    tabControl.TabPages[1].Controls.RemoveByKey("label235");
    tabControl.TabPages[1].Controls.RemoveByKey("tbMax");

    tabControl.TabPages[2].Controls.Add(label235);
    tabControl.TabPages[2].Controls.Add(tbMax);
}

我在哪里犯那个错误?

推荐答案

首先，tbMax的名称不是"tbMax"，而是"txtBoxNoiseMax".因此，对于它来说，将无法在RemoveByKey上找到文本框.

First of all, tbMax's name is not "tbMax", but "txtBoxNoiseMax". So for one, it won't be able to find the TextBox on RemoveByKey.

您每次都在制作新控件.

You're making new controls each time.

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